Abaixo está uma instrução que descreve uma tarefa de geração de SQL, combinada com uma entrada que fornece mais contexto sobre os esquemas de tabela disponíveis. Escreva o código SQL que responda adequadamente à solicitação
 ###Instrução: Qual álbum teve uma posição de pico de 6 e uma certificação de 3x platina?
 ###Tabelas: CREATE TABLE 1990s (1990s_id AUTO_INCREMENT PRIMARY KEY, Season VARCHAR, Tropical Lows INT, Tropical Cyclones INT, Severe Tropical Cyclones INT, Strongest storm VARCHAR) CREATE TABLE top_10_american_albums (top_10_american_albums_id AUTO_INCREMENT PRIMARY KEY, Rank INT, Artist VARCHAR, Album VARCHAR, Peak position INT, Sales INT, Certification VARCHAR) CREATE TABLE list_of_the_most_populous_us_counties_sorted_according_to_the_mid-2011_official_estimate_by_the_uscb (list_of_the_most_populous_us_counties_sorted_according_to_the_mid-2011_official_estimate_by_the_uscb_id AUTO_INCREMENT PRIMARY KEY, Rank VARCHAR, County VARCHAR, State VARCHAR, Land area (km²) VARCHAR, Land area (mi²) VARCHAR, April 1, 2010 census VARCHAR, April 1, 2010 density (/km²) VARCHAR, April 1, 2010 density (/mi²) VARCHAR, July 1, 2010 official estimate VARCHAR, July 1, 2010 density (/km²) VARCHAR, July 1, 2010 density (/mi²) VARCHAR, July 1, 2011 official estimate VARCHAR, July 1, 2011 density (/km²) VARCHAR, July 1, 2011 density (/mi²) VARCHAR, Mid-2010 to mid-2011 change (Absolute) VARCHAR, Mid-2010 to mid-2011 change (%) VARCHAR, County seat or courthouse VARCHAR) CREATE TABLE 1970_isle_of_man_lightweight_tt_125cc_final_standings (1970_isle_of_man_lightweight_tt_125cc_final_standings_id AUTO_INCREMENT PRIMARY KEY, Place INT, Rider VARCHAR, Country VARCHAR, Machine VARCHAR, Speed VARCHAR, Time VARCHAR, Points INT) CREATE TABLE defunct_teams (defunct_teams_id AUTO_INCREMENT PRIMARY KEY, Club VARCHAR, Sport VARCHAR, League VARCHAR, Venue VARCHAR, Championships INT, Years Active VARCHAR)  
SELECT Album FROM top_10_american_albums WHERE Certification = 3x platinum AND Peak position = 6